Last updated: June 2, 2025
In Hengtang, China, staying informed about the UV Index is crucial for maintaining skin health and preventing sunburn. Understanding the levels of ultraviolet radiation can help residents and visitors alike to take necessary precautions against harmful exposure, particularly during peak hours when the UV Index reaches 11, indicating an extreme risk of harm to the skin. With a climate classified as Cfa, characterized by hot summers and mild winters, Hengtang faces significant UV exposure risks, especially between 10 AM and 2 PM. By being aware of these UV levels, individuals can better protect themselves and enjoy the outdoors safely.
As the sun rises, the UV Index begins its steady ascent. At 07:00, it starts off modestly at 1, waking up to the soft glow of dawn. By 08:00, the index ramps up to 3, signaling a gentle increase in solar intensity. The real surge happens between 09:00 and 12:00, peaking at an impressive 11 from 11:00 to 13:00, indicating a high level of UV exposure that demands careful sun protection. As the afternoon rolls in, the index gradually declines, dropping to 9 at 14:00 before tapering off to 6 by 15:00. By the evening hours, the intensity wanes significantly, falling to 2 by 17:00, and eventually fading back to a 1 by 18:00, where it remains until sunset. This hourly UV Index progression highlights the importance of protecting your skin during those peak midday hours!
| Time | UVI | Category | Time to Burn |
|---|---|---|---|
| 07:00 | 1 | low | 45 min |
| 08:00 | 3 | moderate | 30 min |
| 09:00 | 6 | high | 25 min |
| 10:00 | 8 | very high | 15 min |
| 11:00 | 11 | extreme | 10 min |
| 12:00 | 11 | extreme | 10 min |
| 13:00 | 11 | extreme | 10 min |
| 14:00 | 9 | very high | 15 min |
| 15:00 | 6 | high | 25 min |
| 16:00 | 4 | moderate | 30 min |
| 17:00 | 2 | low | 45 min |
| 18:00 | 1 | low | 45 min |
| 19:00 | 1 | low | 45 min |
The UV Index experiences a significant rise throughout the year, peaking during the summer months of June through August, when it reaches an extreme category with values of 11 to 12 and a quick burn time of just 10 minutes. Specifically, the high-risk months for UV exposure include March through September, where the UV Index frequently indicates very high to extreme levels, necessitating caution for both residents and visitors. It’s crucial to protect your skin during these months by wearing protective clothing, using sunscreen with a high SPF, and limiting sun exposure, especially between 10 AM and 4 PM when UV radiation is at its strongest. As the fall and winter months approach, the UV Index gradually decreases, with December presenting the lowest reading of 5, categorized as moderate, but vigilance remains important year-round.
UV Risk Categories
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Beijing UVI | 2 | 3 | 5 | 8 | 9 | 9 | 10 | 9 | 7 | 6 | 4 | 2 |
| Chengdu UVI | 5 | 6 | 8 | 10 | 12 | 11 | 11 | 10 | 11 | 8 | 6 | 4 |
| Shanghai UVI | 5 | 6 | 8 | 10 | 10 | 11 | 12 | 11 | 11 | 8 | 6 | 4 |
| Hengtang | 6 | 7 | 9 | 10 | 11 | 11 | 12 | 12 | 10 | 9 | 7 | 5 |
| Guangzhou UVI | 7 | 9 | 11 | 12 | 13 | 13 | 13 | 12 | 11 | 10 | 9 | 7 |
| Shenzhen UVI | 7 | 10 | 12 | 12 | 14 | 13 | 13 | 13 | 12 | 11 | 9 | 7 |